Sodium bicarbonate [14C]
Dilute solutions of NaH14CO3 ready to use 
Different ampoules in stock, e.g., 4, 10, 20, 40 and 100 µCi/ml
Calibrated specific activity
Sterile glass ampoules, pH~10
Free of toxic substances
Special volumes and specific activities on request
The ampoules contain an aqueous solution of NaH14CO3, 2.4 mM in sterile water, and are ready to use in measurements of phytoplankton primary production. The NaH14CO3 is purified in the DHI Laboratories by distillation in order to remove metals that can affect the primary production. The sterile ampoules are distributed with a certificate specifying the radioactivity.